Product Details | MACHINE SCREW

5305-01-251-2339 An externally threaded fastener whose threaded portion is of one nominal diameter, No 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below No. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; and SCREW, ASSEMBLED WASHER. See also, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; and SCREW, CAP SOCKET HEAD.

Part Alternates: A1C39C4A7, 5305-01-251-2339, 01-251-2339, 5305012512339, 012512339

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 15 MAR 1987 01-251-2339

Drawings & Photos | NSN 5305-01-251-2339


Cross Reference | NSN 5305-01-251-2339

Part Number Cage Code Manufacturer
A1C39C4A7 06725 SPS TECHNOLOGIES LLC DBA AIR INDUSTRIES

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Technical Data | NSN 5305-01-251-2339

Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER 0.250 INCHES
THREAD QUANTITY PER INCH 28
THREAD CLASS 3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.425 INCHES NOMINAL
FASTENER LENGTH 0.847 INCHES MINIMUM AND 0.877 INCHES MAXIMUM
SCREW MATERIAL IRON ALLOY 660
SCREW SURFACE TREATMENT PASSIVATE
MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
HEAD STYLE A40 FLAT COUNTERSUNK UNDERCUT
HEAD DIAMETER 0.060 INCHES NOMINAL
HEAD HEIGHT 0.390 INCHES MINIMUM AND 0.395 INCHES MAXIMUM
COUNTERSINK ANGLE 90.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLE B1 CROSS RECESS TYPE 1

Restrictions/Controls & Freight Information | NSN 5305-01-251-2339

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information